human_reference_atlas Homo sapiens cumulus oophorus http://upload.wikimedia.org/wikipedia/commons/3/3a/Gray1164.png cumulus oophorus cumulus oophorus A cluster of cells that project into the cavity of the mature ovarian follicle. It is released with the embedded oocyte during ovulation. In order for fertilization to occur this layer must be penetrated by the spermatocyte. [WP,modified]. Wikipedia:Cumulus_oophorus AS ovarian cumulus uberon discus proligerus MA:0002414 cumulus ovaricus FMA:18659 UBERON:0001306 SCTID:258586009 EMAPA:35267 multicellular anatomical structure cumulus oophorus oocyte complex